const path = require('path');
// let filename = path.basename("c:/a/b/c/d.html");
// let filename = path.dirname("c:/a/b/c/d.html");
// let filename = path.extname("c:/a/b/c/d.html");
// let filename = path.join("/a",'b','c');
let filename = path.resolve("/a","../b");
console.log(filename);
